<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>state的简写方式</title>
</head>
<body>
  <!-- 准备好一个"容器" -->
  <div id="test"></div>

  <!-- 引入React核心库 -->
  <script type="text/javascript" src="../js/react.development.js"></script>
  <!-- 引入react-dom，用于支持react操作DOM -->
  <script type="text/javascript" src="../js/react-dom.development.js"></script>
  <!-- 引入babel，用于将jsx转为js -->
  <script type="text/javascript" src="../js/babel.min.js"></script>

  <script type="text/babel">
    // 1.创建组件
    class Weather extends React.Component {

      // 初始化状态
      state = {isHot: false, wind: '微风'}

      render() {
        const {isHot, wind} = this.state
        return <h1 onClick={this.changeWeather}>今天天气很{isHot ? '炎热' : '凉爽'}，{wind}</h1>
      }

      // 自定义方法————要用赋值语句的形式+箭头函数
      changeWeather = () => {
        const isHot = this.state.isHot
        this.setState({isHot: !isHot})
      }
    }
    // 2.渲染组件到页面
    ReactDOM.render(<Weather/>, document.getElementById('test'))
  </script>
</body>
</html>
